Improvement in lamp-chimneys



J. G. FLOYD. LAMP GHIMNBY.

Patented Sept. 19, 1865.

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UNITED STATES PATENT Ormes.

JOHN G. FLOYD, OF KEOKUK, IOWA.

lMPFiOVEM ENT IN LAM P -CH i MNEYS.

Specification forming part of Letters Patent No. 49,993, dated September 19, 1865.

To all whom it may concern:

Be it known that I, JOHN G. FLOYD, of the city of Keokuk, county of Lee, and State of Iowa, have invented a new and useful Mode of Constructing Lamp-Chimneys and I do hereby declare that the following is a full and exact description ot' said invention.

This device consists in perforating the chimney with a hole large enough to admit of the introduction ot' an ordinary match or taper. This hole is made in the side of the chimney opposite to and about midway of the :Ha-me of thelamp.

The object and useful effect ot' perforating the chimneys of lamps, as above described, is to light the lamp through the aperture thus formed without being under the necessity of elevating or taking off the chimney for that purpose, thereby facilitating the ligh tin g of the lamp, and vat the same time avoiding,` the danger ofbreaking the chimney by removing or replacing it, all of which can be readily understood by reference to the accompanying drawings.

Figurel represents acommon glass chimney with the hole c opposite the iiame of thelamp. The hole a may be made either a short distance above or below the. point indicated. Fig. 2 is a horizontal section of my improved lampchimney. Fig. 3 is a profile view, showin g one mode of making the hole in the chimney.

The practical mode of making the hole -in the chimney is to use a punch very similar to a shocmakers punch. That used by the me'- cbanic will have a shoulder to regulate the height of the hole, and will be done while the glass is hot, and without any additional expense; and the shoulder may be made to slide, so as to regulate the height, as above stated, of the hole in the chimney.

Another practical mode would be to form a recess in the mold in which the lamp-chimney' is blown,so that ahoilowteat77 orhulb is formed ou the' outer surface of the chimney at the point Where the hole should be made. This teat or bulb is easily broken or iled away until the hole is formed. The diagram, Fig. 3, will illustrate this mode.

Still another practical mode would be to construct the mold with a pin or core at the point where the hole is to be formed and ow the glass around the same.

All of the above modes are common in the art of glass-makingand are described in the books and in patent letters of dii'erent persons, but not in the manufacture of glass lampchimneys with a lighting-hole through them, as shown in my drawings.

What Iclaim as my invention, and desire to secure by Letters Patent, is-

The within-described new article of manufacture, to wit: a lamp-chimney with a hole or holes in yits sides or parietes thereof, as set forth and described, or when constructed with any other holes in its sidesJdesigned for the same-purpose.

JOHN G. FLOYD.

Witnesses: v

` JOHN T. WILKINSON,

G. A. KELLOGG. 

